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Bioinorganic chemistry

Redox control of oxoiron(IV)

The oxygen-evolving centre in the protein complex photosystem II involves Ca2+ within a high-valent oxomanganese cluster, but the role of Ca2+ has yet to be clarified. Interestingly, the electron-transfer behaviour of a non-haem oxoiron(IV) complex has now been found to be significantly altered by Lewis acid metal-ion binding to the oxo atom.

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Figure 1: High-valent oxoiron(IV) complex electron-transfer reduction chemistry.


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Karlin, K. Redox control of oxoiron(IV). Nature Chem 2, 711–712 (2010).

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